From 3a21109f890e0ef5f13b7a5196c3ac2265f797b1 Mon Sep 17 00:00:00 2001
From: rxu <rxu@mail.ru>
Date: Fri, 5 Mar 2021 20:23:28 +0700
Subject: [PATCH] [ticket/16719] Fix PHP notice/warning on installation

PHPBB3-16719
---
 phpBB/install/app.php | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/phpBB/install/app.php b/phpBB/install/app.php
index 0e6212e37a..36d16e914b 100644
--- a/phpBB/install/app.php
+++ b/phpBB/install/app.php
@@ -16,7 +16,10 @@
  */
 define('IN_PHPBB', true);
 define('IN_INSTALL', true);
-define('PHPBB_ENVIRONMENT', 'production');
+if (!defined('PHPBB_ENVIRONMENT'))
+{
+	define('PHPBB_ENVIRONMENT', 'production');
+}
 $phpbb_root_path = '../';
 $phpEx = substr(strrchr(__FILE__, '.'), 1);